Expandable sealing mechanism



FIG. 1 is a perspective view of end portions of an expansion band madein accordance with the present disclosure, wherein a portion of theexpansion band is shown in broken lines and the central nut is shownentirely in broken lines;

FIG. 2 is an enlarged perspective view thereof, wherein a hex-shapedperiphery of the right end portion of the expansion band is shown inbroken lines;

FIG. 3 is a front elevation view thereof, wherein a portion of theexpansion band is shown in broken lines and the central nut is shownentirely in broken lines;

FIG. 4 is a top plan, partial cross-sectional view thereof taken alongline 4-4 of FIG. 3, wherein the central nut is shown entirely in brokenlines;

FIG. 5 is a bottom plan view thereof, wherein a portion of the expansionband is shown in broken lines and wherein the oversleeve and central nutare shown entirely in broken lines;

FIG. 6 is a side elevation, cross-sectional view thereof taken alongline 6-6 of FIG. 3, wherein a hex-shaped periphery of the end portion ofthe expansion band is shown in broken lines; and,

FIG. 7 is a side elevation view thereof, it being understood that leftand right side views of the sealing assembly are identical, wherein aportion of the expansion band is shown in broken lines.

The broken lines in the figures represent portions of the expandablesealing mechanism that form no part of the claimed design.

CLAIM The ornamental design for an expandable sealing mechanism, asshown and described.